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Sencon SI9500 User Manual

Digital film weight gauge
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S I 9 5 0 0
Digital Film Weight Gauge
User Manual
REF
OPERATION
MANUAL No.
092-00600-08
LANGUAGE
ENGLISH
REVISION
8

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Summary of Contents for Sencon SI9500

  • Page 1 S I 9 5 0 0 Digital Film Weight Gauge User Manual OPERATION MANUAL No. 092-00600-08 LANGUAGE ENGLISH REVISION...

  • Page 2: Table Of Contents

    MULTI-POINT CALIBRATION .................23 5. ACCURACY AND LINEARITY ..........24 INSTRUMENT TESTS AND CHECKS ..............24 FACTORS AFFECTING ACCURACY ..............24 6. USING THE SI9500 WITH A PRINTER ........ 25 OVERVIEW ......................25 CHOOSING A PRINTER ..................25 CONNECTING THE PRINTER................26 6.3.1...
  • Page 3 SETTING UP OTHER PRINTERS ................29 ENABLING THE PRINTOUT..................29 SELECTING THE PRINTOUT FORMAT ..............30 PRINTER PROBLEMS .....................31 7. USING THE SI9500 WITH A COMPUTER......32 GENERAL.........................32 COMPUTER PORT CONNECTIONS ..............32 SETUP COMPUTER PORT ..................33 SETTING DATA FORMAT AND SPEED ..............35 UNI-DIRECTIONAL PROTOCOL................35...
  • Page 4 A. PREFACE The SI9500 is a professional instrument that if used correctly will give accurate results and service. It is essential that users familiarise themselves with its operation and that before being put into use the instrument is set up correctly.
  • Page 5 B. QUICK GUIDE TO CALIBRATE FLAT SHEET PROBE/FORMED CAN PROBE. Attach crocodile clip to test sample but make sure probe is not in contact. Enter set-up mode by: pressing CALIBRATE and LACQUER NUMBER together. (PASS should appear in large display, if not press END and try set-up mode again) then enter PASSWORD.

  • Page 6: Introduction And Mode Selection

    1. INTRODUCTION AND MODE SELECTION 1.1 PURPOSE The Sencon SI9500 Digital Film Weight Gauge is an instrument designed for use in the can, end and lid making industries. It enables the film weight of lacquers and coating to be measured.

  • Page 7: Choosing An Operating Mode

    CHOOSING AN OPERATING MODE The SI9500 can be altered by the user between two operating modes. The jumper is located inside the unit and is not intended for frequent operation. It is therefore necessary to decide which of the two modes described below will best suit your particular requirements.

  • Page 8: Familiarisation And Preparing For Use

    2. FAMILIARISATION AND PREPARING FOR USE 2.1 VOLTAGE SELECTION Unless otherwise instructed Sencon will ship 220-240V 50/60Hz models to all European customers and 110-120V 50/60Hz models to all U.S.A. customers. The operating voltage is clearly indicated by a label on the bottom of the unit and the type of mains lead (power cord) fitted, the 110V models having a moulded U.S.A.

  • Page 9: Connecting Probes

    The unit can be used with Sencon probes or other types of capacitance probe, for example, probes designed for use with STRAND (TM) gauges. If a Sencon probe is used it will have an integral lead that can be connected directly to the probe socket on the side of the instrument case.

  • Page 10: Connecting A Footswitch

    The use of a footswitch enables readings to be captured into the instrument memory whilst keeping both hands on the probe or test piece. The optional Sencon footswitch is supplied complete with a lead that will connect into the footswitch socket on the side of the instrument case.
  • Page 11 NUMERIC KEYPAD OPERATION KEYS...

  • Page 12: Switch On And Self Test

    Status Indicators - used to show whether the instrument is in measure mode, calibrate mode or set-up mode with the top indicator used to warn of a reading fault such as damaged lacquer, pinhole or missing lacquer. Lacquer Number Display - used to indicate which channel number (1 to 50) is selected in fixed channel mode or which lacquer number (1 to 99) is selected in...

  • Page 13: Master Reset

    The second fuse carrier carries a spare fuse. If the fuse is O.K. but the unit still will not work, or the fuse repeatedly blows the gauge should be returned to Sencon for repair. 2.7 MASTER RESET In the event of a major change, error or fault it may become necessary to completely reset the instrument.

  • Page 14: Selecting Line Number Prompt

    2.9 SELECTING LINE NUMBER PROMPT It may be advantageous to relate printed or transmitted readings to a particular production line number so the unit can be made to prompt the operator for a line number for each batch of readings. A line number must then be entered to which readings will be related until the next line number is entered.

  • Page 15: Set-Up Mode

    2.10 SET-UP MODE Set-up mode enables the allocation of set-piece (known sample) values of different lacquers to the 99 channels in custom channel mode. It also enables the probe to be exactly matched to the instrument by cancelling out stray admittance created by the probe and its leads, this latter function is known as calibrating the probe.
  • Page 16 To calibrate the probe first ensure that it is connected correctly to the instrument BUT NOT ON OR CONNECTED TO A SAMPLE. Then follow the following procedure; Enter Set-up mode (See 2.11). Press the CALIBRATE key. At this point the display will show the amount of offset required and the lacquer number display will indicate CP.

  • Page 17: Using The Instrument In Fixed Channel Mode

    3. USING THE INSTRUMENT IN FIXED CHANNEL MODE 3.1 OVERVIEW Fixed channel mode provides perhaps the most straight forward operation but with a lower accuracy than custom channel mode. In this mode it is not necessary to set up any values in the instrument other than probe calibration as described in 2.13.

  • Page 18: Taking Readings

    3.4 TAKING READINGS Having previously ascertained the correct channel for a particular lacquer type readings are easily taken by placing the unknown samples in or under the probe and noting the value displayed whilst the correct channel is selected. Channels are selected by using the up and down keys or alternatively by pressing the LACQUER NUMBER key and entering the channel number on the keypad followed by the ENTER key.

  • Page 19: Using The Instrument In Custom Channel Mode

    4. USING THE INSTRUMENT IN CUSTOM CHANNEL MODE 4.1 OVERVIEW Customer channel operation provides for increased accuracy but requires that a "once off" set-up is performed for each lacquer type used. In use a channel is calibrated exactly to the known sample of a given lacquer type. Readings of that lacquer type are then taken when that channel or lacquer number is selected.

  • Page 20: Changing A Set-Up Value

    4.3 CHANGING A SET-UP VALUE It may be necessary to change the value associated with a particular channel number for instance if a new known sample with a different film weight is obtained for that lacquer. To change a set-up value follow the procedure described in 4.2 and select the lacquer number to be changed.

  • Page 21: Frequency Of Calibration

    4.6 FREQUENCY OF CALIBRATION It is necessary to periodically re-calibrate to the set piece (see chapter 5) and experience will indicate an appropriate frequency. As re-calibration only takes a matter of seconds it is often decided to check calibration before each batch of measurements.

  • Page 22: Custom Channel Set-Up/Summary

    4.9 CUSTOM CHANNEL SET-UP/SUMMARY TO CALIBRATE FLAT SHEET PROBE/FORMED CAN PROBE. Attach crocodile clip to test sample but make sure probe is not in contact. Enter set-up mode by: pressing CALIBRATE and LACQUER NUMBER together. (PASS should appear in large display, if not press END and try set-up mode again) then enter PASSWORD.

  • Page 23: Custom Channel Set-Up/Summary

    Introduction If the distribution of film weight on your calibration panel is not uniform it may be possible to achieve a more accurate calibration of the SI9500 by calibrating at several points on the panel and taking the average. Special software has now been produced to achieve this and is available in units with software version 1.17 and higher.

  • Page 24: Accuracy And Linearity

    5. 5. 5. 5. ACCURACY AND LINEARITY 5.1 INSTRUMENT TESTS AND CHECKS The SI9500 has been designed to provide maximum stability and linearity given the nature of the test. Each unit is tested for linearity using highly stable test capacitors that are traceable to national standards and each unit is shipped with its unique test certificate giving the results of these tests.

  • Page 25: Using The Si9500 With A Printer

    6. 6. 6. 6. USING THE SI9500 WITH A PRINTER 6.1 OVERVIEW The use of a printer with the SI9500 relieves the operator from having to record the results using pen and paper which is time consuming and can be a source of errors.

  • Page 26: Connecting The Printer

    6.3.1 THE EPSON FX OR EX PRINTER This printer will need to be fitted with the Epson #8143 serial interface which offers a 25 way D type female connector. The wire connection is as follows. SI9500 PIN COLOUR EPSON PIN...

  • Page 27: The Tandy Dmp132 Printer

    CTS or Clear to Send. This signal is generated by the printer and is used to stop and start the flow of data from the SI9500. It must be connected as its default state is to stop data transmission. 6.4 SETTING UP THE RS232 DATA FORMAT The RS232 standard allows a large number of permutations in its data transmission format.

  • Page 28: Setting Up The Epson Printer

    The format of the data transmission on the printer port of the SI9500 is; 300/1200/9600 Baud - Selectable 8 DATA BITS NO PARITY BIT 1 STOP BIT It is possible to change the baud rate as described in section 6.5 below, however, Sencon recommend the 1200 baud is used.

  • Page 29: Setting Up The Tandy Printer

    6.5 ENABLING THE PRINTOUT The SI9500 is shipped with its printer port disabled. This is to prevent the SI9500 from attempting to send data to a non-existent printer and subsequently reporting a communications failure.

  • Page 30: Selecting The Printout Format

    SWITCH 1:7 SWITCH 1:8 SELECTION OPEN OPEN PRINTOUT OFF OPEN CLOSED PRINTOUT ON - 9600 BAUD CLOSED OPEN PRINTOUT ON - 1200 BAUD CLOSED CLOSED PRINTOUT ON - 300 BAUD 6.6 SELECTING THE PRINTOUT FORMAT It is possible to select different formats of printed output to suit different type of items being tested.

  • Page 31: Printer Problems

    If the printout takes place but not correctly, check that both the printer and SI9500 are set to the same baud rate and that the printer is set to the data format as given in section 6.4.

  • Page 32: Using The Si9500 With A Computer

    RS232C, RS422 and RS485 communication standards. 7.2 COMPUTER PORT CONNECTIONS Serial Port 2 is the 4 way connector on the side of the SI9500, see section 2.2. The pinout of this connector is shown below RS232...

  • Page 33: Setup Computer Port

    7.3 SETUP COMPUTER PORT The serial port is set by default to operate in the RS232 mode, however, if a RS422 or RS485 protocol is required then jumper settings on the EMC board need to be made. The following figure shows the position of all connectors as well as the EMC board location: On/Off button Figure a1: Rear View of Gauge...
  • Page 34 The procedure to setup a RS422 or a RS485 port is shown below: • Un-plug the unit and place face down, with the mains lead to the back and on left hand side, on a clean surface. • Carefully remove the fixings using the Allen key provided with the unit. •...

  • Page 35: Setting Data Format And Speed

    7.4 SETTING DATA FORMAT AND SPEED The computer port is set up using internal switch bank 2. The full functions of these switches are given in appendix 1 together with information on accessing and identifying these switches.All switches must be set to match the data transmission set up on the serial port on the host computer and switch 2:1 must be closed to enable computer port output.

  • Page 36: Format Of Message Transmitted

    7.7 FORMAT OF MESSAGE TRANSMITTED The format of the message sent is dependant on the settings of the appropriate DIP switches, and the mode of communication selected. If all options are selected the message is as follows: <20h><4Ch><LINE NUMBER><20h><54h><LACQUER NUMBER><20h><57h<FILM WEIGHT> where: <20h>...

  • Page 37: Error Messages

    7.8 ERROR MESSAGES "Buffer nearly full" will scroll across the large display when the internal buffer is 90% full. The message is cleared automatically when the level drops below 90%. Alternatively the CLEAR key can be pressed. FULL will flash on the large display when the internal buffer is full. The message will clear automatically when space is available in the buffer, ie., after a message is sent.
  • Page 38 8. APPENDIX 1 INTERNAL SELECTION SWITCHES A1.1. GENERAL The user options and settings for the SI9500 are changed using switches on the circuit boards inside. This appendix deals with gaining access, locating the correct switch and the function of each switch.
  • Page 39 A1.5 CHANGING MAIN BOARD SWITCH SETTINGS A single bank of switches is located on the main circuit board near to the large cylindrical capacitor. This bank contains 8 switches, labelled 1 to 8 on the body. One side of the switch block is marked OPEN, when this side of the white rocker is down the switch is open, when it is up the switch is closed.
  • Page 40 A1.8 SWITCH DESIGNATION Decimal Point/Line Number/ Lacquer Number/Print Header SWITCH OPEN CLOSED POSITION S1:1 1 decimal place displayed 2 decimal places displayed S1:2 Line number not prompted for Line number prompted for. Lacquer number not S1:3 Lacquer number transmitted. transmitted S1:4 Printed Header Vewrtical Printer Header Horizontal...
  • Page 41 OPEN OPEN OPEN 76800* CLOSED OPEN OPEN 38400 OPEN CLOSED OPEN 19200 CLOSED CLOSED OPEN 9600 OPEN OPEN CLOSED 4800 CLOSED OPEN CLOSED 2400 OPEN CLOSED CLOSED 1200 CLOSED CLOSED CLOSED *NOTE: Sencon do not guarantee operation at this speed.
  • Page 42 - A lacquer fault has been detected accompanied by fault indicator illuminating (see section 4.8) BUSY - The SI9500 is waiting for the printer (see section 6.7) BUFFER NEARLY FULL - Scrolling, computer buffer is 90% full (see section 7.7)

  • Page 43: Si9507 Finished Can Probe

    The 5 pin connector should be inserted in the "probe" socket on the side of the SI9500. The crocodile clip should be used to make good electrical contact with the metal of the can being tested.

  • Page 44: Addendum

    If the distribution of film weight on your calibration panel is not uniform it may be possible to achieve a more accurate calibration of the SI9500 by calibrating at several points on the panel and taking the average. Special software has now been produced to achieve this and is available in units with software version 1.17 and higher.

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